IPconnect for Windows NT - Version 2.3 IPconnect for Windows NT is high performance, low cost software that allows ALL users on a LAN to have local and Internet Email, web browsing, Firewall services and Network Address Translation services through one shared connection to their local ISP. The Internet connection can be a modem, ISDN modem, external router (i.e. T1, Frame Relay, etc.), DSL or cable modem.